%0 Journal Article %A Drewniak, Józef %A Pȩkala, Barbara %T Properties of fuzzy relations powers %J Kybernetika %D 2007 %P 133-142 %V 43 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2007__43_2_a2/ %G en %F KYB_2007__43_2_a2